Costs & Pricing

Metric	Ink Business Unlimited® Credit Card	Spark 1% Classic
Annual fee	$0	$0 (ongoing; no intro-year structure)
Employee card fee	$0	$0 (free employee cards; no per-card fee published)
Purchase APR	16.74%–24.74% variable (Prime + 9.99% to +17.99%; cap 29.99%)	28.99% variable on the product page and pre-approval rates block (Sept. 3, 2026). Not published as a range; no Prime + margin table on the Classic page. Review sites still show 29.49%–30.74% — treat as stale vs issuer page.
Intro APR (purchases)	0% fixed for first 12 months (lost if minimum payment missed)	Not offered
Foreign transaction fee	3%	$0
Late payment fee	$40	Not on the official Classic page. Bankrate (Dec 19, 2025): up to $39. Do not apply Cap One charge-card 2.99%-of-unpaid-minimum language to Classic.

Rewards & Value

Metric	Ink Business Unlimited® Credit Card	Spark 1% Classic
Base earn rate	1.5% cash back (1.5 Ultimate Rewards points per $1)	Unlimited 1% cash back on every purchase. Marketing: no limits or category restrictions; no minimums. Rewards will not expire for the life of the account.
Welcome bonus	$1,000 cash back after $8,000 in purchases within first 4 months (100,000 points; as of 9/3/2026)	None. Live public offer as of September 3, 2026: no cash bonus, no spend threshold. Historical typical offer: also none.
Redemption value	1¢/point for cash, gift cards, and program travel; Amazon Shop with Points 0.8¢/point	Cash at face value on statement credit or check (1¢ per 1% dollar). Official FAQ: redeem for any amount / no minimums. Gift-card rates may vary. Do not assume portal 5% unless the user actually books hotels/cars in Capital One Business Travel. Do not assume World Elite travel credits or transferable miles.
Transfer partners	Not native on this card; points can be moved to another Ultimate Rewards account for transfer-partner access when paired with eligible cards (e.g., Ink Preferred)	None on this cash-back product. Official FAQ: cash rewards earned through spending on Spark Classic are not taxable (issuer still says consult a tax expert).

Credit & Eligibility

Metric	Ink Business Unlimited® Credit Card	Spark 1% Classic
Personal guarantee	Required — joint and several liability of authorizing officer and business	Not quoted on the Classic product page. Commonly reported as required; official Classic sentence missing. Secondary sources (NerdWallet, Ramp, WalletHub) treat Cap One small-business cards, including Classic, as PG required.
Credit check	Hard pull on authorizing officer's personal credit (SSN required)	Pre-approval advertised as no impact to personal score. Submitted application treated by reviewers as a hard pull on personal credit (commonly all three bureaus). Official: application may be declined if you have a freeze with credit bureaus.
Employee cards	Free; number not capped in public copy; individual spend limits, lock/unlock, and alerts	Free; add with name, DOB, phone; option to issue plastic or not; custom spend and cash limits, reset mid-cycle. Number allowed not disclosed. Primary account / guarantor remains responsible (Classic page does not spell joint and several).
Product type	Revolving business credit card	Revolving business credit card (balance may be carried; interest applies). Not a charge card. Contrast siblings: Spark Cash Plus and Venture X Business are pay-in-full / NPSL charge cards.

Pros & Cons

Ink Business Unlimited® Credit Card

Pros

• $0 annual fee on primary and employee cards
• Uncapped 1.5% on eligible purchases — simple flat-rate earn
• 12-month 0% intro APR on purchases
• Elevated $1,000 / $8,000 / 4-month welcome bonus (as of 9/3/2026); AU spend counts
• Primary business-use rental CDW up to $60,000 on a no-fee card

Cons

• 3% foreign-transaction fee
• No native bonus categories — loses to 2% flats and Ink Cash/Preferred in bonus buckets
• Personal guarantee + hard personal pull + unofficial 5/24 rule
• Welcome bonus blocked if you ever held this or another $0-AF Chase business card
• No balance-transfer intro APR; no cell-phone protection or premium travel credits

Spark 1% Classic

Pros

• $0 annual fee with no year-2 surprise
• Explicitly underwritten for fair personal credit — rare in the Spark/Ink/Amex Business set
• Unlimited 1% + 5% Capital One Business Travel hotels/cars; rewards do not expire while the account is open
• $0 foreign-transaction fee on a fair-credit product
• Free employee cards with spend limits, virtual numbers, QBO/Excel export, year-end summaries, and $0 fraud-liability language covering employee cards

Cons

• 28.99% variable purchase APR and no intro 0% — carrying a balance is expensive
• No welcome bonus
• 1% base lags Spark Cash Select (1.5%) and Spark Cash (2%)
• Balance transfers not available
• Likely reports full activity to personal credit — utilization risk

Verdict

Ink Business Unlimited® Credit Card

One of the strongest no-annual-fee business cards for flat-rate earn. The Ink Business Unlimited combines uncapped 1.5% cash back, a generous intro APR window, free employee cards, and a elevated welcome bonus — all without an annual fee. Best for domestic spenders who don't need category bonuses or premium travel perks. Poor fit for foreign spend, no-PG seekers, or businesses that would earn more with Ink Cash or Ink Preferred in their bonus categories.

Spark 1% Classic

Spark Classic is a credit-access card, not a rewards engine and not a 0% working-capital tool. Do not confuse it with Spark Cash Select (1.5%, $750 bonus, 9-month 0%) or Spark Cash Plus (2% NPSL charge card). Do not copy Venture X or World Elite Spark insurance onto this SKU until Classic’s own Guide to Benefits is confirmed. If you can qualify for Select or Ink Unlimited, those are better earners. If you cannot, Classic is a reasonable builder — only if you pay in full.